Vegetation Management

American Canyon — in partnership with Napa County Fire, American Canyon Fire Protection District and the Napa Communities Firewise Foundation — introduced sheep grazing as a form of natural vegetation management in September 2023, emphasizing the community's dedication to eco-conscious living, public safety and preserving the natural beauty of our community.

Traditional vegetation management methods often involve chemical herbicides or heavy machinery, adversely affecting local ecosystems, air quality, and water sources. In contrast, American Canyon's use of sheep from local farmer Cori Carlson, founder of Napa Pasture Protein, offers a sustainable solution that aligns with the City's commitment to environmental stewardship.

Benefits of Sheep Grazing

Healthier Soil: Sheep naturally fertilize the land as they graze, improving soil quality. Their grazing habits naturally return organic matter to the soil, enriching it with essential nutrients and boosting microbial diversity.
Quiet & Non-Disruptive: Unlike machines, sheep work silently and can graze in hard-to-reach areas.
Natural Weed Control: Sheep naturally fertilize the land as they graze, improving soil quality. By consuming unwanted plants, sheep can also disrupt pest habitats, reducing the need for chemical interventions.
Public Safety: The sheep play a vital role in reducing the accumulation of dry grasses and other flammable vegetation that can fuel wildfires. Their presence helps maintain a healthier, more fire-resistant landscape. Additionally, trimming grasses and shrubs improves visibility in public areas, such as parks, vacant lots and community spaces. This increased visibility can deter criminal activity, as potential offenders are less likely to engage in illicit activities in well-maintained, well-lit areas.
Sustainable and Cost-Effective: Sheep grazing aligns with American Canyon's sustainability goals and offers cost-effective vegetation management. This means that taxpayer dollars can be allocated to other essential services and community projects, garnering support from those who value efficient use of public resources.

Where to Find the Herd

Update as of May 7, 2025

Completed Areas:

Cartagena
Veterans Park
Parry's
Hillside by Montevino
Hillside above the trailer park and below Starling Ct.

Our sheep are currently divided into two working groups. Group 1 is operating along American Canyon Creek at the intersection of Newell and American Canyon Road. This group is progressing toward Newell Drive for a secondary pass along the trail. Group 2 is located across Highway 29 at the Creek area before Danrose. This group is working westward.

We anticipate making another pass across Cartagena and Veterans Park during the summer months. The hillside areas (both at Montevino and above the trailer park) are not expected to experience significant regrowth this season.

We are also pleased to report that both groups are in good health, Fortino is doing well and Lola and the llama are in good health!

Frequently Asked Questions

Who monitors the sheep?

A professional shepherd monitors the flock daily, ensuring their health, water, feed, fencing and overall safety. This hands-on approach keeps the sheep well cared for and ensures the grazing program runs smoothly.

To report any issues, contact the shepherd at (707) 287-5717.

How long do the sheep stay in a specific location?

The flock moves through different grazing zones and typically stays in one location for a few days before moving to the next site. If you see them in your area, enjoy the visit — they’re helping to clear vegetation before continuing their work elsewhere!

Why might I see dogs and a llama with the flock?

If you see large, fluffy, white, watchful dogs and a tall, alert llama among the sheep in local grazing areas, they are Livestock Guardian Animals (LGAs). These dedicated protectors help keep the flock safe from predators such as coyotes, residential dogs, bears, mountain lions and human trespassers.

Unlike herding dogs, which move livestock, LGAs live with the sheep full-time, ensuring round-the-clock protection.

What makes the llama a good protector for the herd?

Llamas are naturally defensive animals with a strong protective instinct.
A llama will stomp, chase and even charge at intruders, making them an excellent guardian against smaller predators like coyotes and stray dogs.
Llamas and Livestock Guardian Dogs (LGDs) work together to protect the flock. While the guardian dogs patrol most of the night and respond to threats, the llama stays with the flock and acts as a strong visual deterrent, standing its ground and confronting smaller predators. She will also alert the dogs when they are resting during the day. Together, they are a great team!

What should I know about the dogs and llama?

They are NOT pets: LGDs and our guardian llama have jobs to do! Please do not approach, call or feed them.
They live outdoors year-round: They are happiest staying with their flock 24/7, regardless of the weather.
They bark, hum and stand guard: LGDs bark loudly to warn predators, while llamas hum, stomp, and use body language to deter threats.
They are loyal but independent: LGDs and llamas bond closely with their livestock and they do not need a lot of human attention.

What should I do if I encounter the dogs or llama?

Stay calm and give them space.
Do not enter grazing areas or interact with the livestock.
Keep walking and do not try to take them anywhere.
If the dog or llama approaches, speak calmly and continue on your way.

These guardian animals play an important role in fire prevention and wildlife conservation by supporting safe grazing practices. By respecting them, you are helping to protect both the livestock and the community.

What are common issues, and when is it important to contact the shepherd?

Sheep outside designated grazing areas: if the flock is in an unexpected location, let us know so we can safely relocate them.
Loose or aggressive dogs bothering the sheep: Livestock Guardian Dogs and the llama will protect the flock, but roaming dogs can be a safety concern.
Damaged fencing or barriers: if you notice a fence has fallen or been tampered with, report it to help keep the sheep safe.
A sheep that appears injured or unwell: the flock is monitored closely, but if you see an animal in distress, contact us immediately.

To report any issues, contact the shepherd at (707) 287-5717.